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PATENTED DE@ 3i i867 i crire grottes @sind @fftrp WILLI AM I-I. NOBLES, OF ST. PAUL, MINNESOTA. Letters Patent No. 72,886, dated December 31, 186i.

IMPROVEMENT IN ySMOKll-EXIINGfUISHllEt; FOR BOILERS.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, WiLLIAai H. NOBLES, of St. Paul, county ofvRamsey, State of Minnesota, have invented an Improved Attachment to Steam-Boiler Fines, for the purpose of carrying off. the smoke and sparks; and I do hereby declare the following to be an exact description thereof, reference being had to the accompanying drawings, and 'to the letters of reference marked thereon, making apart of this specification, as follows, to wit:

Figure 1 represents a top view of the boilers, fines, and fan.

Figure 2 is a longitudinal section of the same Figure 3 is a front view of the samer.

`Figure 4 represents a sectional view of a scrcw- Figure 5 represents atop View of fig. 4. l

The nature ef my invention is in the arrangement andl combination of ve lines, (more or less,) connected at the front of the boiler so as to carry off the frame, smoke, and cinders through one or two iiues to the rear or front ofthe boiler, where a fan is attached and encased, so as to form a vacuum and draw the flame, smoke, and cinders through the fan-box and deposit them in a reservoir beneath, or below the bottom or sides of a. vessel, at least such portion ofthe smoke, cindeis, the., vthat may likely pass through to the fan; but I believe that the greaterl portion that leaves the hre-box, by the action of the draught, is consumed inits passage through the main fine, before it reaches thc fan, so that the ilues are self-consuming heaters, and as the smoke and cinders that are left unburnt reach the fan, they arc there wet and connteracted by sprays or jets of water that pass through the perforations ofthe hollow axle of the fan, and are consequently forced down-through a tube or discharge-pipe beneath. I also intend to cover and enclose the tubes between the boiler and the fan, to prevent any injury to their surroundings. p

The object is to dispense with the unwieldy smoke-stacks attached to engine-boilers of steam-vessels, locomotives, or stationary engines, that throw outtheir smoke and cinders, to the annoyance of passengers and and especially boats conveying cotton or combustible freight. Smokeestern rivers are the cause of shaped fan that may be adapted if deemed necessary.

destruction of surrounding buildings, stacks on steamboats are frequently in the way of trees and bridges, and on the w numerous disasters. I I also, by my invention, utilize some of the heat in the iiues lthat is usually passed oithrough the ordinary smoke-stacks, thereby saving fuel.- Indiiferent fuel can also be used, that could not be with a smoke-stack, as, by the use ofthe fan, the draught can be increased or diminished as the engineer may desire.

A represents the boilers. B is a revolving fanwhcel, made of metal, and is encased and enclosed in an air-tight metallic box, and revolveson a hollow perforated shaft, Ll This fan is for the purpose of creating a vacuum and drawing the smoke and cinders with the increased draught through the iucs to the fan-box. C is u screw-shaped fan that may be adapted to the saine purpose, as show from which the fiume, smoke, and sparks pass along and under the boilers A, as indicated by the arrows at fig. 2; thence through the fines E E at their rear ends to the front; thence from the front of the boilers through the centre and upper flue F; again to the rear and through the rear-iues G G, that are connected with the fanbo'i: of fan B; or I may, if I think proper, carry the smoke and sparks any indefinite number of times back and forth lthrough the'boilers by mea-ns of connecting any number of ilues zigzag, before the sparks or heat can reach the fan B. H is alsoa ilueextending from the front between the boilers, and connected likewise in front with the inner ues F, so as to be connected withvthe fan-box B in the rear. The fines G and I-I in the rear are intended to be encased between the boilers and the fan to prevent any injury being done by theirbecoming heated. I represents the fastenings of the front lids or doors of the boilers; J, the hollow shaft ofthe screw-fan' (as seen at fig. 4,) that is also perforated; K, the spiral flanges ofthe screw-fan. L is the hollow shaft of fan B, that is perforated for the purpose of receiving' water to be forced through the perforations in a spray or jets, so as to wet the sparks or any cinders that may pass through the fines G Ginto the fan-box, and also condense the smoke and precipitate it with the cinders down through the discharge-spout M. Below N, are sliding blocks,(adjustablev by screw-bolts working in slcts,) on each side of the cylinder of screw-fan C, (at iig. upon which `the vstep O rests, and upon which a collar of the perforated shaft .I rests and supports the shaft. At the lower end of the shaft J is a circular' perforated plate, that works closely in the cylinder or box C,

of the fan, through which apertures or perforations the sparks are forced into 4,) so as to holdthejournals the water below at M. l? Pare n at g. 4. I) is the fireb ox in front,

'12,ess

the ues to conduct the smoke and sparks into the box C. Q is a. pulley by which the screw is operated. R

shows the inside of the hollow shzft L, at figs. 2 and 5. S showsvthe perforations of the shaftJ' of g. 4; TT,

i the slots in blocks N. U U are the journals of theblock N that pass through the cylinder C into the step O, and support the step. V, the water-line (at iig. 4) under the deck W ofo. vessel. X is the aperture, commonly called the man-hole forlcleanin'g out the boiler; Y, the fire doors; Z, a. small engine, intended to be used for driving the fan B, and temporarily to start the steam up in the main boilers. The perforated shaft L can be supplied by an elevated tank at the side.

What I claim as my invention, and desire to secure by Letters Patent, s The arrangement of the fines E F and G G, with the blower B, perforated shaft L, and dischargeopening Mwherehy to carry o thesmoke and sparks, and to dispense with 'a smoke-stack, substantially a sherein Set forth.

W. H. NOBLES.

Witnesses:

J. FRANKLIN REIQART, O. D. MAYHEW. 

